British population surface showing the 1987 general election results (Colour).

633 mainland constituencies are shown, each of equal volume, using the conventional colours to show the mix of voting software by author on an Archimedes computer.

The height of each constituency is in proportion to the inverse of their area so each pillar is of equal volume. This is one alternative to using a population cartogram to show election results. Unfortunately it requires us to be able to estimate volume from a perspective drawing and some parts are obscured for instance, the red core of London by the blue outer shield.